This large late 19th c. jeweled button has a marvered glass satin finish cabochon like glass by Leo Popper. Tiny glass frit is marvered into the sold glass body while soft. The effect is a cluster of pinkish-silver "bubbles". Around the pink glass is metallic silver glass that imitates metal--really pretty art glass or at least hand made. It measures 1 & 1/2" by 1 & 1/16" and is in very fine condition.